Make a copy of the layer containing the vertical stripe (move off the mask out of the copy). Select then the Free Transform option to change the stripe’s shape on the copy and cut out the unnecessary elements from it, choosing the Eraser Tool (E) for this operation. This layer must be situated lower than the rest of the layers, the same way shown below:



Make a mouse click on the same layer on Add a Mask option and select the Brush Tool (B) (Opacity 20%) of black color to represent a half – opacity effect.

 



Create a new layer and use the Pen Tool (P) on it to draw a star of white color.

 



Make many copies of the layer having the white star on it and choose the Free Transform selection for changing the copies’ sizes, placing the copies as the way from below:

 

Combine in a group all the layers containing the white stars (hold on Ctrl button to mark out the appropriate layers and make a click on the left mouse’s button to take down the marked layer on Create a new group selection). Apply next demonstrated parameters on the made group: Blending mode-Overlay



Make a copy of the last made group, Merge Down the group’s layers into a single one (CTRL+E) and apply for this layer the next filter’s option: Filter>Blur>Motion Blur

 



The final result!

View full size here.